1
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.GetterUtil;
26 import com.liferay.portal.kernel.util.StringPool;
27 import com.liferay.portal.kernel.util.Validator;
28
29 import java.util.Map;
30 import java.util.StringTokenizer;
31 import java.util.concurrent.ConcurrentHashMap;
32
33
38 public class Version implements Comparable<Version> {
39
40 public static final String UNKNOWN = "unknown";
41
42 public static Version getInstance(String version) {
43 Version versionObj = _versions.get(version);
44
45 if (versionObj == null) {
46 versionObj = new Version(version);
47
48 _versions.put(version, versionObj);
49 }
50
51 return versionObj;
52 }
53
54 public static Version incrementBugFix(Version version) {
55 String bugFix = version.getBugFix();
56
57 int bugFixInt = GetterUtil.getInteger(bugFix);
58
59 if (bugFixInt > 0) {
60 bugFix = String.valueOf(bugFixInt + 1);
61 }
62
63 return getInstance(
64 _toString(
65 version.getMajor(), version.getMinor(), bugFix,
66 version.getBuildNumber()));
67 }
68
69 public static Version incrementBuildNumber(Version version) {
70 String buildNumber = version.getBuildNumber();
71
72 int buildNumberInt = GetterUtil.getInteger(buildNumber);
73
74 if (buildNumberInt > 0) {
75 buildNumber = String.valueOf(buildNumberInt + 1);
76 }
77
78 return getInstance(
79 _toString(
80 version.getMajor(), version.getMinor(), version.getBugFix(),
81 buildNumber));
82 }
83
84 public static Version incrementMajor(Version version) {
85 String major = version.getMajor();
86
87 int majorInt = GetterUtil.getInteger(major);
88
89 if (majorInt > 0) {
90 major = String.valueOf(majorInt + 1);
91 }
92
93 return getInstance(
94 _toString(
95 major, version.getMinor(), version.getBugFix(),
96 version.getBuildNumber()));
97 }
98
99 public static Version incrementMinor(Version version) {
100 String minor = version.getMinor();
101
102 int minorInt = GetterUtil.getInteger(minor);
103
104 if (minorInt > 0) {
105 minor = String.valueOf(minorInt + 1);
106 }
107
108 return getInstance(
109 _toString(
110 version.getMajor(), minor, version.getBugFix(),
111 version.getBuildNumber()));
112 }
113
114 protected Version(String version) {
115 StringTokenizer st = new StringTokenizer(version, _SEPARATOR);
116
117 _major = st.nextToken();
118
119 if (st.hasMoreTokens()) {
120 _minor = st.nextToken();
121 }
122
123 if (st.hasMoreTokens()) {
124 _bugFix = st.nextToken();
125 }
126
127 StringBuilder sb = new StringBuilder();
128
129 while (st.hasMoreTokens()) {
130 sb.append(st.nextToken());
131
132 if (st.hasMoreTokens()) {
133 sb.append(_SEPARATOR);
134 }
135 }
136
137 _buildNumber = sb.toString();
138 }
139
140 public int compareTo(Version version) {
141 if (version == null) {
142 return 1;
143 }
144
145
147 if (version.toString().equals(UNKNOWN)) {
148 return 1;
149 }
150
151 if (toString().equals(UNKNOWN)) {
152 return -1;
153 }
154
155 int result = getMajor().compareTo(version.getMajor());
156
157 if (result != 0) {
158 return result;
159 }
160
161 result = getMinor().compareTo(version.getMinor());
162
163 if (result != 0) {
164 return result;
165 }
166
167 result = getBugFix().compareTo(version.getBugFix());
168
169 if (result != 0) {
170 return result;
171 }
172
173 return getBuildNumber().compareTo(version.getBuildNumber());
174 }
175
176 public boolean equals(Object obj) {
177 if ((obj == null) || (!(obj instanceof Version))) {
178 return false;
179 }
180
181 Version version = (Version)obj;
182
183 String versionString1 = toString();
184 String versionString2 = version.toString();
185
186 if (versionString1.equals(UNKNOWN) || versionString2.equals(UNKNOWN)) {
187 return false;
188 }
189
190 return versionString1.equals(versionString2);
191 }
192
193 public String getBugFix() {
194 if (_bugFix == null) {
195 return "0";
196 }
197
198 return _bugFix;
199 }
200
201 public String getBuildNumber() {
202 return _buildNumber;
203 }
204
205 public String getMajor() {
206 if (_major == null) {
207 return "0";
208 }
209
210 return _major;
211 }
212
213 public String getMinor() {
214 if (_minor == null) {
215 return "0";
216 }
217
218 return _minor;
219 }
220
221 public int hashCode() {
222 return toString().hashCode();
223 }
224
225 public boolean includes(Version version) {
226 if (equals(version)) {
227 return true;
228 }
229
230 if (getMajor().equals(StringPool.STAR)) {
231 return true;
232 }
233
234 if (getMajor().equals(version.getMajor())) {
235 if (getMinor().equals(StringPool.STAR)) {
236 return true;
237 }
238
239 if (getMinor().equals(version.getMinor())) {
240 if (getBugFix().equals(StringPool.STAR)) {
241 return true;
242 }
243
244 if (getBugFix().equals(version.getBugFix())) {
245 if (getBuildNumber().equals(StringPool.STAR) ||
246 getBuildNumber().equals(version.getBuildNumber())) {
247
248 return true;
249 }
250 }
251 else if (_contains(getBugFix(), version.getBugFix())) {
252 return true;
253 }
254 }
255 else if (_contains(getMinor(), version.getMinor())) {
256 return true;
257 }
258 }
259 else if (_contains(getMajor(), version.getMajor())) {
260 return true;
261 }
262
263 return false;
264 }
265
266 public boolean isLaterVersionThan(String version) {
267 if (compareTo(getInstance(version)) > 0) {
268 return true;
269 }
270 else {
271 return false;
272 }
273 }
274
275 public boolean isPreviousVersionThan(String version) {
276 if (compareTo(getInstance(version)) < 0) {
277 return true;
278 }
279 else {
280 return false;
281 }
282 }
283
284 public boolean isSameVersionAs(String version) {
285 if (compareTo(getInstance(version)) == 0) {
286 return true;
287 }
288 else {
289 return false;
290 }
291 }
292
293 public String toString() {
294 return _toString(_major, _minor, _bugFix, _buildNumber);
295 }
296
297 private static boolean _contains(
298 String containerString, String numberString) {
299
300 if (containerString.endsWith(StringPool.PLUS)) {
301 String containerNumberString = containerString.substring(
302 0, containerString.length() - 1);
303
304 try {
305 int containerNumber = Integer.parseInt(containerNumberString);
306 int number = Integer.parseInt(numberString);
307
308 return containerNumber <= number;
309 }
310 catch (NumberFormatException nfe) {
311 return false;
312 }
313 }
314
315 return false;
316 }
317
318 public static String _toString(
319 String major, String minor, String bugFix, String buildNumber) {
320
321 StringBuilder sb = new StringBuilder();
322
323 sb.append(major);
324
325 if (Validator.isNotNull(minor)) {
326 sb.append(_SEPARATOR);
327 sb.append(minor);
328
329 if (Validator.isNotNull(bugFix)) {
330 sb.append(_SEPARATOR);
331 sb.append(bugFix);
332
333 if (Validator.isNotNull(buildNumber)) {
334 sb.append(_SEPARATOR);
335 sb.append(buildNumber);
336 }
337 }
338 }
339
340 return sb.toString();
341 }
342
343 private static final String _SEPARATOR = StringPool.PERIOD;
344
345 private static Map<String, Version> _versions =
346 new ConcurrentHashMap<String, Version>();
347
348 private String _major;
349 private String _minor;
350 private String _bugFix;
351 private String _buildNumber;
352
353 }